Home / 30,427.02-45,640.80-8,240.60

Finding the Fourth Proportional to 30,427.02, 45,640.80 and 8,240.60

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Solution

The fourth proportional to 30,427.02, 45,640.80 and 8,240.60 is: 12,360.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,427.02 : 45,640.80 = 8,240.60 : x
  2. Step 2: Convert to fraction form
    30,427.02/45,640.80 = 8,240.60/x
  3. Step 3: Cross multiply
    30,427.02x = 45,640.80 × 8,240.60
  4. Step 4: Simplify right side
    30,427.02x = 376,107,576.48
  5. Step 5: Solve for x
    x = 376,107,576.48/30,427.02
  6. Step 6: Final answer
    x = 12,360.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.